CN113668143A - Preparation method of antibacterial polypropylene non-woven fabric - Google Patents
Preparation method of antibacterial polypropylene non-woven fabric Download PDFInfo
- Publication number
- CN113668143A CN113668143A CN202110999345.2A CN202110999345A CN113668143A CN 113668143 A CN113668143 A CN 113668143A CN 202110999345 A CN202110999345 A CN 202110999345A CN 113668143 A CN113668143 A CN 113668143A
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- Prior art keywords
- molecular sieve
- silver
- ball milling
- woven fabric
- antibacterial
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
- D01F1/103—Agents inhibiting growth of microorganisms
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Artificial Filaments (AREA)
Abstract
The invention provides a preparation method of an antibacterial polypropylene non-woven fabric, which is characterized in that a molecular sieve is subjected to ball milling to obtain an amorphous state and then is loaded with silver, so that the water repellency of the non-woven fabric can be obviously improved, the active sites of ion exchange of the molecular sieve can be improved, the silver loading capacity can be better improved, the antibacterial performance of the polypropylene non-woven fabric is improved, and the antibacterial polypropylene non-woven fabric has higher application potential.
Description
Technical Field
The invention relates to a polypropylene non-woven fabric, in particular to an antibacterial polypropylene non-woven fabric applied to a mask.
Background
Polypropylene is a non-toxic, odorless and tasteless milky-white high-crystalline polymer, and is one of the lightest varieties of all plastics at present. It is particularly stable to water and has good formability, and is one of the materials commonly used for preparing non-woven fabrics. The polypropylene non-woven fabric is made into a net by high-temperature wire drawing and then is bonded into one kind of fabric by a hot rolling method. The process flow is simple, the yield is high, and the product is nontoxic and harmless to human bodies, so that the product is widely applied to various fields such as sanitary materials and the like at present.
Since the polypropylene nonwoven fabric does not have antibacterial properties, it is generally required to add an antibacterial agent when it is cited as a sanitary material such as a mask. Silver is a common antibacterial inorganic material, and in order to prevent silver particles from losing in the field, silver is generally loaded on a molecular sieve carrier or other carriers. The molecular sieve can be used as a carrier of silver on one hand, and provides adsorption performance on the other hand. However, in some specific fields, for example, the non-woven fabric on the outer side of the mask is required to have the performance of anti-splash, etc., but the application of the molecular sieve carrier makes the carrier have strong adsorption capacity to water, and anti-splash is difficult to realize, so that an additional anti-water layer is required. Moreover, the molecular sieve is usually loaded with silver by ion exchange, and the molecular sieve with a complete cage-like structure has few binding sites, so that the silver loading of the molecular sieve is less. Therefore, a new method for preparing a polypropylene nonwoven fabric is urgently needed to solve the above problems.
Disclosure of Invention
Aiming at the content, the invention overcomes the defects of strong hydrophilic performance and few binding sites of the molecular sieve in the prior art by modifying the silver-loaded molecular sieve antibacterial agent.
The invention provides a preparation method of antibacterial polypropylene non-woven fabric, which is characterized by comprising the following steps:
(1) mixing raw materials containing polypropylene and an antibacterial agent in proportion and stirring to form mixed particles, wherein the mass ratio of the polypropylene to the antibacterial agent is 50-200: 1;
(2) feeding the mixture into a double-screw extruder to be melted to form a mixed melt;
(3) and extruding, drawing, lapping and hot rolling the mixed melt to form the antibacterial polypropylene non-woven fabric, wherein the antibacterial agent is a silver-loaded amorphous molecular sieve, and the silver-loaded amorphous molecular sieve is formed by carrying out ball milling and crushing on the molecular sieve to form an amorphous state and then carrying silver.
Specifically, the molecular sieve is a microporous molecular sieve, preferably a NaA molecular sieve.
Specifically, the amorphous molecular sieve is obtained by performing wet ball milling and screening on a molecular sieve with the particle size of 1-2 μm, wherein the rotation speed of the wet ball milling is 200-400nm, the ball milling time is 2-3h, and the particle size of the amorphous molecular sieve is 200-400 nm.
Specifically, the screening is to place the molecular sieve subjected to wet ball milling in deionized water, stir the mixture evenly, stand the mixture for 0.5 to 1 hour, take supernatant liquor, centrifuge the supernatant liquor and dry the supernatant liquor to obtain the molecular sieve.
Specifically, the silver-loaded NaA molecular sieve and ammonium nitrate are mixed according to a solid-liquid ratio of 1:4-6 after ball milling, stirred at 60-100 ℃ for 3-5h, washed by deionized water and dried to obtain an ammonium molecular sieve, the ammonium molecular sieve and silver nitrate are mixed according to a mass ratio of 1:2-3, and subjected to solid-phase reaction at 400-450 ℃ for 2-5h to form the silver-loaded amorphous molecular sieve
Specifically, the method comprises the following steps:
(1) placing an average NaA molecular sieve of 1-2 mu in a ball milling tank, pouring ethanol according to a certain proportion to start ball milling, sucking out ball milling slurry after the ball milling is finished, and drying to obtain the ball milling molecular sieve.
(2) And placing the dried ball-milled molecular sieve into deionized water according to a certain proportion, stirring uniformly, standing, centrifuging supernatant liquid, and drying to obtain the screened molecular sieve.
(3) Mixing the screened molecular sieve and ammonium nitrate, stirring for 3-5h at 60-100 ℃, washing with deionized water, drying to obtain an ammonium molecular sieve, mixing the ammonium molecular sieve and silver nitrate according to the mass ratio of 1:2-3, and carrying out solid phase reaction for 2-5h at the high temperature of 400-450 ℃ to form the silver-loaded amorphous molecular sieve.
(4) Mixing polypropylene and silver-loaded amorphous molecular sieve in proportion, and stirring to form mixed particles;
(5) feeding the mixture into a double-screw extruder to be melted to form a mixed melt;
(6) and extruding, drawing, lapping and hot rolling the mixed melt to form the antibacterial polypropylene non-woven fabric.
The invention also provides a polypropylene non-woven fabric which adopts the antibacterial non-woven fabric prepared by the method.
The invention also provides an application of the polypropylene non-woven fabric in preparing a mask, and particularly the polypropylene non-woven fabric prepared by the invention is used on the outermost side of the mask.
The beneficial technical effects are as follows:
according to the invention, the molecular sieve is subjected to ball milling to form an amorphous state (an amorphous structure, and a skeleton structure is completely collapsed) and then is used as a carrier for ion exchange to load silver particles, so that the adsorption effect of the molecular sieve is reduced, the adsorption effect of the polypropylene non-woven fabric on water is reduced, and the water repellency is improved.
Detailed Description
Example 1
This example uses the following method to prepare a polypropylene nonwoven fabric
(1) Placing an average NaA molecular sieve of 2 mu in a ball milling tank, pouring ethanol according to the proportion of 2:98, setting the rotation speed of wet ball milling to be 300rpm, setting the ball milling time to be 2h, sucking out ball milling slurry after the ball milling is finished, drying to obtain the ball milling molecular sieve, and testing the average particle size to be 310nm through a particle size test.
(2) And putting the dried ball-milled molecular sieve into deionized water according to the proportion of 1:50, uniformly stirring, standing for 0.5h, centrifuging supernatant, and drying to obtain the screened molecular sieve.
(3) Mixing the screened molecular sieve and ammonium nitrate according to a solid-liquid ratio of 1:5, stirring for 4h at 80 ℃, washing with deionized water, drying to obtain an ammonium molecular sieve, mixing the ammonium molecular sieve and silver nitrate according to a mass ratio of 1:1.5, and carrying out solid-phase reaction for 4h at a high temperature of 450 ℃ to form the silver-loaded amorphous molecular sieve.
(4) Mixing and stirring polypropylene and silver-loaded amorphous molecular sieve in proportion to form mixed particles, wherein the mass ratio of the polypropylene to the antibacterial agent is 100: 1;
(5) feeding the mixture into a double-screw extruder to be melted to form a mixed melt;
(6) and extruding, drawing, lapping and hot rolling the mixed melt to form the antibacterial polypropylene non-woven fabric.
Comparative example 1
Comparative example 1 omits steps (1) and (2) relative to example 1.
Comparative example 2
Comparative example 2 omits step (2) relative to example 1.
Comparative example 3
Step (3) in comparative example 3 with respect to example 1 is as follows:
(3) mixing the screened molecular sieve and ammonium nitrate according to a solid-liquid ratio of 1:8, stirring for 4 hours at 80 ℃, washing and drying by using deionized water, repeating the operation for 4 times to obtain an ammonium molecular sieve, mixing the ammonium molecular sieve and silver nitrate according to a mass ratio of 1:1.5, and carrying out solid-phase reaction for 4 hours at a high temperature of 450 ℃ to form the silver-loaded amorphous molecular sieve.
The polypropylene nonwoven fabrics prepared in the above example 1 and comparative examples 1 to 3 were subjected to a water repellency test according to AATCC22 spray method (test results were classified into five grades, 1 grade-the sprayed surface was completely wetted, 2 grade-the sprayed surface was half wetted, 3 grade-the sprayed surface was only wetted in a small area without connection, 4 grade-the sprayed surface was not wetted but beads were adhered to the surface, 5 grade-the sprayed surface was not wetted and beads were not adhered to the surface) and 1h sterilization rate for escherichia coli (5 groups of samples were taken for each example and tested, taking the final average value), with the results shown in the following table:
TABLE 1 test results of various examples and comparative examples
As can be seen from the results in the table above, the polypropylene non-woven fabric prepared by the invention has good antibacterial performance, can obviously reduce the water adsorption, and has wide market application prospect.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (7)
1. A preparation method of antibacterial polypropylene non-woven fabric is characterized by comprising the following steps:
(1) mixing raw materials containing polypropylene and an antibacterial agent in proportion and stirring to form mixed particles, wherein the mass ratio of the polypropylene to the antibacterial agent is 50-200: 1;
(2) feeding the mixture into a double-screw extruder to be melted to form a mixed melt;
(3) and extruding, drawing, lapping and hot rolling the mixed melt to form the antibacterial polypropylene non-woven fabric, wherein the antibacterial agent is a silver-loaded amorphous molecular sieve, and the silver-loaded amorphous molecular sieve is formed by carrying out ball milling and crushing on the molecular sieve to form an amorphous state and then carrying silver.
2. The method of claim 1, wherein: the molecular sieve is a microporous molecular sieve, preferably a NaA molecular sieve.
3. The method of claim 1, wherein: the amorphous molecular sieve is obtained by performing wet ball milling and screening on a molecular sieve with the particle size of 1-2 mu m, wherein the rotation speed of the wet ball milling is 200-400nm, the ball milling time is 2-3h, and the particle size of the amorphous molecular sieve is 200-400 nm.
4. The method of claim 1, wherein: the screening is to place the molecular sieve after wet ball milling in deionized water, stir the mixture evenly, stand the mixture for 0.5 to 1 hour, take supernatant liquor, centrifuge the supernatant liquor and dry the supernatant liquor to obtain the product.
5. The method of claim 1, wherein: the silver-loaded amorphous molecular sieve is prepared by mixing a ball-milled NaA molecular sieve and ammonium nitrate according to a solid-to-liquid ratio of 1:4-6, stirring for 3-5h at 60-100 ℃, washing with deionized water, drying to obtain an ammonium molecular sieve, mixing the ammonium molecular sieve and silver nitrate according to a mass ratio of 1:2-3, and carrying out solid-phase reaction for 2-5h at the high temperature of 400-450 ℃ to form the silver-loaded amorphous molecular sieve.
6. A polypropylene nonwoven fabric using the antibacterial nonwoven fabric prepared by the method according to claims 1 to 5.
7. Use of the polypropylene nonwoven fabric according to claim 6 for the manufacture of a mask.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999345.2A CN113668143B (en) | 2021-08-28 | 2021-08-28 | Preparation method of antibacterial polypropylene non-woven fabric |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110999345.2A CN113668143B (en) | 2021-08-28 | 2021-08-28 | Preparation method of antibacterial polypropylene non-woven fabric |
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| Publication Number | Publication Date |
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| CN113668143A true CN113668143A (en) | 2021-11-19 |
| CN113668143B CN113668143B (en) | 2022-05-27 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002030388A2 (en) * | 2000-10-10 | 2002-04-18 | Intech Thüringen Gmbh | Material for producing products having fibrinolytic and/or antibacterial properties |
| US20050139066A1 (en) * | 2003-12-24 | 2005-06-30 | Chevron U.S.A. Inc. | Mixed matrix membranes with small pore molecular sieves and methods for making and using the membranes |
| CN108849980A (en) * | 2018-07-20 | 2018-11-23 | 山东理工大学 | A method of efficient carrying silver antimicrobials are prepared by carrier of Zn hydridization NaA molecular sieve |
| CN109836803A (en) * | 2019-03-05 | 2019-06-04 | 泰州海达塑胶包装有限公司 | A kind of waterproof breathable membrane material with antibacterial functions |
| CN110512297A (en) * | 2019-09-09 | 2019-11-29 | 闽江学院 | A kind of high-efficiency antimicrobial fiber and its manufacturing method |
| CN111393749A (en) * | 2020-04-30 | 2020-07-10 | 宁夏大学 | Polypropylene composite material and preparation method thereof |
| US20210069372A1 (en) * | 2018-06-18 | 2021-03-11 | Zhejiang University | Molecular sieve/fiber composite material and preparation method thereof |
| CN112695458A (en) * | 2020-12-18 | 2021-04-23 | 江南大学 | Melt-blown non-woven fabric with antibacterial function and preparation method and application thereof |
-
2021
- 2021-08-28 CN CN202110999345.2A patent/CN113668143B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002030388A2 (en) * | 2000-10-10 | 2002-04-18 | Intech Thüringen Gmbh | Material for producing products having fibrinolytic and/or antibacterial properties |
| US20050139066A1 (en) * | 2003-12-24 | 2005-06-30 | Chevron U.S.A. Inc. | Mixed matrix membranes with small pore molecular sieves and methods for making and using the membranes |
| US20210069372A1 (en) * | 2018-06-18 | 2021-03-11 | Zhejiang University | Molecular sieve/fiber composite material and preparation method thereof |
| CN108849980A (en) * | 2018-07-20 | 2018-11-23 | 山东理工大学 | A method of efficient carrying silver antimicrobials are prepared by carrier of Zn hydridization NaA molecular sieve |
| CN109836803A (en) * | 2019-03-05 | 2019-06-04 | 泰州海达塑胶包装有限公司 | A kind of waterproof breathable membrane material with antibacterial functions |
| CN110512297A (en) * | 2019-09-09 | 2019-11-29 | 闽江学院 | A kind of high-efficiency antimicrobial fiber and its manufacturing method |
| CN111393749A (en) * | 2020-04-30 | 2020-07-10 | 宁夏大学 | Polypropylene composite material and preparation method thereof |
| CN112695458A (en) * | 2020-12-18 | 2021-04-23 | 江南大学 | Melt-blown non-woven fabric with antibacterial function and preparation method and application thereof |
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| CN113668143B (en) | 2022-05-27 |
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